Home / 11,887.20-16,389.43-7,630.75

Finding the Fourth Proportional to 11,887.20, 16,389.43 and 7,630.75

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Solution

The fourth proportional to 11,887.20, 16,389.43 and 7,630.75 is: 10,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.20 : 16,389.43 = 7,630.75 : x
  2. Step 2: Convert to fraction form
    11,887.20/16,389.43 = 7,630.75/x
  3. Step 3: Cross multiply
    11,887.20x = 16,389.43 × 7,630.75
  4. Step 4: Simplify right side
    11,887.20x = 125,063,642.97
  5. Step 5: Solve for x
    x = 125,063,642.97/11,887.20
  6. Step 6: Final answer
    x = 10,520.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.